Albert-russo



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Patented Nov. 4, 1924.

isiais iinnnnrnosso, or rirTsroN, PENNSYLVANIA.

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Application ined october i1, 192s., semaine. 593,767.

vTo all whom it may concer/nf Be it known that I, ALBERT Russo, a citi zen of the United States, residing at Pittston, in the county of Luzerneand Stateoi Pennsylvania, have invented certainv new and useful mprovements in Airv Heaters, of which the following is a specification.

This invention has reference to improvements in that class of heating attachments used in connection with smoke pipes wherein provision is made for introducing cold air through the lower or base end o the said` smoke pipe and in such manner that the said cold air, as it passes into the pipe, is heated r and is then discharged from the said smoke pipe into another pipe or drum to be con`` veyed to an upper room or other placetobe heated. y

Heaters of the general character stated have heretofore been provided, and so Lar` as I know, with cold air receiving andheating chambers in the nature of a pipe section closed at the upper and lower endand located within the stove pipe and of suihciently less diameter than the stove pipe to provide for passing the products of combustion delivered into the smoke pipe, around'the internal pipe, the latter andthe stove pipe usually having connected.r aligned cold air intakes at the bottom and similarly connected hot airy outlets for delivering the heated air into the oiftake to the room to be heated.

In the use of tubular internal pipes ascold air receivers, the smoke passage isl usually. so restricted that the draftthrough theismoke i e oiisequence, since the internaltubular cold air receiverstakev `up ythe greatest` internal space of the smoke pipe, heating the 'cold air as it passes lthrough the internalfpipeis a slow process and a relatively expensive,

one. y

My invention primarily has for' its purpose to provide 'an improved construction of coldl air heating` attachmentfor the ordinary smoke pipe vfor stoves, in which the internal or cold air chamber' is so formed that there can be little or no retarding oi the draft through the smokel pipe and the process of heating the air passage or chamber within the smoke pipe is quickly and conveniently eiected, and the said inner or cold air receiving chamber is peculiarly shaped, for being conveniently'nserted and secured within the smoke pipe, certain other details of construction and arrangement of parts being is more or less retarded thereby and in also included in my invention, as 4,will hereinafter be explained in detail', specifically pointed out in 'the appended claims, and il'- lustrated in the accompanying drawings, in which: i

.Figure l is a somewhat diagrammatical face l view of my invention applied for use, parts being in section and illustrating the application ora two pipe arrangement,

ingin side elevation, of the two pipe sectionsshown in yFigure l. l V

Figure 3 is a detail perspective view of one of the inner flat tubes constructed for being applied ina single pipe arrangement. Figure 4: is a detail perspective view of an air port stop,r hereinafter referred to'.

Figures 5, 6 and 7 are detail horizontal sections on thelines 5-5 6-6 and 77, respectively, o n'Figure l. Y i, l

In the drawing, I have shown thesmoke iiue from the stove* to the chimney asfcomposedof two smokepipe sections 1 1, telescopicallyconnected and with the lower or 'of the internalvwallv of the smoke pipe, to

which the ,said fiat tube 2 is madefast in a mannerk presently explained.

ln practice, ythe inner 4tube 2 is made of a stove pipe section of less diameter than the diameteroifthe smoke pipe within which the tube is applied. For example, for an ordi-- nary stove pipe inches in diametenl take another pipesectionsay L,t1/2 inches in diameter and shape `thegsaid` smaller; diameter pipe section into liatwise` shape, as is best shown in Figure' yi'romfwhich it will be observed thatfwhen thus shaped the pipe section is broadened into a tube 6 inches wide withfedgel portions 2O for datwise and closelyllittingagainst the corresponding inner sidesof the smoke pipe. f

It should be statedltha-t'by liattening the .i Figure 2 is a transverse section, parts befy 411/2 inch diameter pipe and bending the open ends thereof, onto each other and 'clamping the same together as at 23-23, the upper and lower ends of the tube 2 are tightly closed to provide, as it were, a chamber 3 into which the cold air is fed and through which said air passes, as it is being heated by the surrounding products of combustion as they pass through the smoke pipe to the chimney flue. p

The advantage iny reducing the sm-aller diameter pipe section to a flattened tube will be apparent when it is considered that were the {l1/2 inch diameter pipe used within the smoke pipe, the said sin'allerdilaineter pipe, by reason of taking Aup yall of the space, (except an annular 11/2y inch passage) in the smoke pipe, it would practically 'stop the draft of the stove and in consequehce much more heat energy is needed for war-ming up a round intern-al pipe than is neces'- sary when the said inner cold air chamber or passage is in the nature of a flat tube,

say one inch across, since but a small part of the internal area of the smoke yI'J'iife is blocked thereby land a large hot air impacting "surfaceis 'always present for receiving the full'heating effect of the freely passing products of combu'ion as they travel from the 'stove outlet to the'chimney vflue ends.l

It is to be 'understood that the internal tubes are made, in sections and when two jor more smoke pipe sections vare used, A'a like number of internal flat y'tube sections 'are telesoopically joine'dto forni a cold 'air'heating chamber which extends continuously from the inlet end to near the outlet in the upper smoke pipe section, it bein-g 'also un,- derstood that where a plurality ofk the tubes are used and joined, as stated, lthe upper end of the upper tube and the low'e'r end of the lower tube are flatwise joined to form the closure for the upper and lower ends of the :said flat tube sections. ,Y

Near itsflower end the internal tube is formed with cold air inlets l which valign with apertures l2 -ne'ai' the lower end of the stove pipe; the upper end of the liiiieiiiial tube has outlets -18 which align with tures 14; in the smoke pipe, the outletsin the flattened tube being in the bppsiiesdfgs, which edges'closely seat against the'adia'c inner faces ofthe smoke pipe when vthe are assembled for use.

In the practical application of 'i'ny irn- 'irovements to a smoke pipe sect-'ion to hold the-several cold "air inlet openings 4 and v12 at the Vbottom and the aligning youtlets lle at the top relatively air-tight, the several openings are'of rectangular shape and 'the openings in the inner pipe or -fia't tube are aomewhat narrower and 'of less length `thafii their opposing yregistering openings 'the smoke pipe, to provide internalflange's that surround the openings in the opposite edgesjbf theiiiteriial tube. The flanges 15 are diagonally slit at their four corners to provide for bending the upper and the lower and theopposite sidey flange portions out through the openings 12 and 14 in the smoke pipe and for bending the said iiange portions back over the adjacent edges of the openings i'n the smoke pipe to form clamps that rigidly secure the inner tube and the smoke pipey in proper operative condition.

Whenonly one hot airoutlet is used, as shown ih Figure l, the other outlet may be clo'se'd in any suitable manner and therefore in order to out out the use of the cold air heating devices, when not needed, closure caps 17 may be used.` vThey are designed to be 'snugly fitted into the cold air inlets or outlets through the smoke pipe, r"see Figure 4l.

Frein the foregoing description, taken in connection with the accompanying drawings, the 'complete construction, the manner of assembling and the advantages of my ini vention, it is believed, will be readily apparent to those familiar with the construe tionfof and use of improvements of the kind mentioned.

What I claim is:

1. In a 'col-'d air heater for stoves, the combinat'ion with the smoke pipe provided with an opening "near the lower end andan opening near the upper end, of a relatively/'nai1- row flat tube 'closed at its upper and lower ends 'said 'tube having' its opposite vertical edges adapted for 4snugly fitting against' the opposite internal faces of the smoke pipe, thesaid edges being provided with an air inlet andan air outlet, thesaid air inlet and outlet in the tube aligning with the lower Vand upper openings respectively in the smoke pipe when the tube is applied wit-hin the smoke pipe and means' for rigidly holding thefiattened tube in operative connection with V"the smoke pipe.

`2,.' In fa st-'eve pipe heater of the character described, vth-"e combination with a smoke pipe an opening near the lower end and any at the upper end; of a fiat' tube relative-3f narran in cross section and of such a width "that f i'ts vopposite edges snugly at the fctiameiieauy opposite bearing perf tions of the smoke pipe when fitted therein, y"ai'lol lower A"ends of the ilat tube bei-ng clamped 'together to form lclosures for the 'said Itube ends, the `opposite edges of tlie 'tubehaving an inlet and an outlet having straight sides and ends, the openings in the edges of the tube beingof less length and width than the coincident kopenings in the smoke` pipe, Vthe corners of the openings in the tube being diagonally slitted whereby flanges yare provided adapted for being drawn ,out through and clamped over the of 'the adjacent openings in the smoke pipe when vthe tube is in 'operative adjustment within the *said smoke pipe.

3. As a new article, a cold air heater for stoves comprising a stove pipe section having an opening near its lower end and an opening near its upper end, a flat tube within the pipe section whose opposite edges abut the internal wall of the pipe section, the said tube being provided along one edge with an air inlet and an outlet in communication with the adjacent apertures in the stove pipe section, the said flat tube having its opposite ends closed and constituting a central vertical partition which extends lengthwise of the pipe section, the said tube having bendable portions adapted for clamp ing over the walls of the openings in the stove pipe sections to rigidly sustain the tube Within the pipe section.

ALBERT RUSSO. 

